Chondroitin Sulfate Methacryloyl (CSMA) is methacrylated chondroitin sulfate and is biocompatible. Chondroitin Sulfate Methacryloyl has a higher degree of methacrylation than HAMA (HY-158220), and the degree of methacrylation is closely related to customizable mechanical properties, swelling properties and enzymatic degradability. Chondroitin Sulfate Methacryloyl is a versatile biomaterial suitable for biomimetic hydrogel scaffolds and an ideal 3D printing hydrogel ink^[1].